Fight him. I dare you.
Note: Minify the command to avoid issues :)
Clarent - As seen in The Secrets of the Immortal Nicolas Flamel series!
VILLAGER HEAD PRANK
Nether Overlord Head!
King of the Skeletons
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)